RU2097462C1 - Способ делигнификации и отбеливания лигноцеллюлозосодержащей пульпы - Google Patents

Способ делигнификации и отбеливания лигноцеллюлозосодержащей пульпы Download PDF

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Publication number
RU2097462C1
RU2097462C1 RU9595114367A RU95114367A RU2097462C1 RU 2097462 C1 RU2097462 C1 RU 2097462C1 RU 9595114367 A RU9595114367 A RU 9595114367A RU 95114367 A RU95114367 A RU 95114367A RU 2097462 C1 RU2097462 C1 RU 2097462C1
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RU
Russia
Prior art keywords
pulp
hydrogen peroxide
bleaching
complexing agent
delignification
Prior art date
Application number
RU9595114367A
Other languages
English (en)
Russian (ru)
Other versions
RU95114367A (ru
Inventor
Линстен Магнус
Баста Йири
Хелльстрем Анна-Софи
Original Assignee
Ека Нобель Актиеболаг
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ека Нобель Актиеболаг filed Critical Ека Нобель Актиеболаг
Priority claimed from PCT/SE1993/001019 external-priority patent/WO1994012721A1/en
Publication of RU95114367A publication Critical patent/RU95114367A/ru
Application granted granted Critical
Publication of RU2097462C1 publication Critical patent/RU2097462C1/ru

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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1042—Use of chelating agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
RU9595114367A 1992-11-27 1993-11-25 Способ делигнификации и отбеливания лигноцеллюлозосодержащей пульпы RU2097462C1 (ru)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE9203585A SE500605C2 (sv) 1992-11-27 1992-11-27 Delignifiering och blekning av lignocellulosahaltig massa med persyra och klorfritt blekmedel
SE9203585-6 1992-11-27
SE9300226-9 1993-01-26
PCT/SE1993/001019 WO1994012721A1 (en) 1992-11-27 1993-11-25 Process for delignification of lignocellulose-containing pulp

Publications (2)

Publication Number Publication Date
RU95114367A RU95114367A (ru) 1996-12-27
RU2097462C1 true RU2097462C1 (ru) 1997-11-27

Family

ID=20387965

Family Applications (1)

Application Number Title Priority Date Filing Date
RU9595114367A RU2097462C1 (ru) 1992-11-27 1993-11-25 Способ делигнификации и отбеливания лигноцеллюлозосодержащей пульпы

Country Status (3)

Country Link
RU (1) RU2097462C1 (sv)
SE (1) SE500605C2 (sv)
ZA (1) ZA938748B (sv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2730144C2 (ru) * 2016-07-01 2020-08-19 Кемира Ойй Способ обработки волокнистой массы

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
1. EP, патент, 0402335, кл. D 21 C 9/10, 1990. 2. EP, патент, 0480469, кл. D 21 C 9/147, 1992. 3. US, патент, 5091054, кл. D 21 C 9/147, 1992. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2730144C2 (ru) * 2016-07-01 2020-08-19 Кемира Ойй Способ обработки волокнистой массы
US11072886B2 (en) 2016-07-01 2021-07-27 Kemira Oyj Process for treating pulp

Also Published As

Publication number Publication date
SE500605C2 (sv) 1994-07-25
SE9203585D0 (sv) 1992-11-27
SE9203585L (sv) 1994-05-28
RU95114367A (ru) 1996-12-27
ZA938748B (en) 1994-06-30

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